Question

How does hydrogen peroxide change hair color?

   How does hydrogen peroxide change hair color?

Introductory Chemistry

Introductory Chemistry

Nivaldo J. Tro 5th Edition

Chapter 16, Problem 12

Instant Answer

Solved by Expert Shazia Naz

10/14/2020

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It is responsible for causing a chemical reaction in the hair cortex, which is the part of the hair strand that contains the pigment responsible for the hair's color. Show more…

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How does hydrogen peroxide change hair color?

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Key Concepts

Chemical Bleaching

Chemical bleaching refers to the process of lightening hair color through the removal or alteration of its natural pigments. The oxidation of melanin by hydrogen peroxide is a core component of bleaching, as it disrupts the molecules that absorb light and create color, leading to the appearance of lighter hair.

Hydrogen Peroxide as an Oxidizing Agent

Hydrogen peroxide is a chemical compound widely used for its oxidizing properties. It works by donating reactive oxygen species that can break down or alter other molecules. In the context of hair treatment, its oxidative capability initiates chemical reactions that modify the pigments present in the hair.

Oxidation Reactions

Oxidation is a chemical process where a substance loses electrons, often resulting in a change in molecular structure. In hair, oxidation by hydrogen peroxide leads to the breakdown of complex pigment molecules, essentially disrupting the chromophores responsible for color.

Melanin and Hair Pigmentation

Melanin is the natural pigment found in hair that gives it color. The different forms and distributions of melanin determine hair shades. When oxidation reactions alter or degrade melanin, the inherent color is reduced or removed, resulting in lighter hair tones.

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